- Mayer, Susan1
- McKamie, William1
- Mellos1
- Melville-[L], Marguerite1
- Menotti, Gian Carlo, 1911-20071
- Miller, Harvey1
- Miller, Philip Lieson, 1906-19961
- Missouri State Music Teachers Association1
- Mitropoulos, Dimitri, 1896-19601
- Moiseiwitsch, Anna1
- Moore, Dick1
- Morrison, John D.1
- Moseley, Elise1
- Moynihan, Agnes1
- Music Educators Association of New Jersey1
- Music Teachers National Association1
- Musician Magazine1
- Musicians' Foundation1
- National Federation of Music Clubs1
- National Schools of Music1